
    <div class="example-input">
      <nz-input-group nzSize="large" [nzSuffix]="suffixIcon">
        <input placeholder="input here" nz-input [(ngModel)]="inputValue" (ngModelChange)="onChange($event)" [nzAutocomplete]="auto"/>
      </nz-input-group>
      <ng-template #suffixIcon>
        <i class="anticon anticon-search"></i>
      </ng-template>
      <nz-autocomplete #auto>
        <nz-auto-optgroup *ngFor="let group of optionGroups" [nzLabel]="groupTitle">
          <ng-template #groupTitle>
            <span>{{group.title}}
              <a class="more-link" href="https://www.google.com/search?q=ng+zorro" target="_blank">更多</a>
            </span>
          </ng-template>
          <nz-auto-option *ngFor="let option of group.children" [nzLabel]="option.title" [nzValue]="option">
            {{option.title}}
            <span class="certain-search-item-count">{{option.count}} 人  关注</span>
          </nz-auto-option>
        </nz-auto-optgroup>
      </nz-autocomplete>
    </div>
